Comprendre un fichier source Java (connexion Bluetooth ?)
Bonjour,
N'étant pas capable de lire (et donc d'interpréter) le Java Android, j'aimerais néanmoins obtenir quelques explications sur le code suivant :
Code:
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| package xxxxxxxxxxxxxx;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothGatt;
import android.bluetooth.BluetoothGattCallback;
import android.bluetooth.BluetoothGattCharacteristic;
import android.bluetooth.BluetoothGattDescriptor;
import android.bluetooth.BluetoothGattService;
import android.bluetooth.BluetoothManager;
import android.content.Context;
import android.os.Handler;
import android.util.Log;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import java.util.Timer;
import java.util.TimerTask;
import java.util.UUID;
class Ble
{
static interface BleObserver
{
public abstract void onBleConnected();
public abstract void onBleDisconnected();
public abstract void onBleReceiveText(String s, int i);
public abstract void onBleTimeout();
}
private static final int BLE_TIMEOUT = 4000;
private static final int REQUEST_TYPE_CONNECT = 1;
private BluetoothAdapter bAdapter;
private BluetoothGatt bGatt;
private BluetoothManager bManager;
private BluetoothGatt boardGatt;
private Context context;
private Set deviceSet;
private Set differDeviceSet;
private final BluetoothGattCallback gattCallback = new BluetoothGattCallback() {
private static final String CHARACTERISTIC_ID = "442f1571-8a00-9a28-cbe1-e1d4212d53eb";
private static final String CLIENT_CHARACTERISTIC_CONFIG = "00002902-0000-1000-8000-00805f9b34fb";
private static final String SERVICE_ID = "442f1570-8a00-9a28-cbe1-e1d4212d53eb";
private StringBuilder sb;
final Ble this$0;
public void onCharacteristicChanged(BluetoothGatt bluetoothgatt, BluetoothGattCharacteristic bluetoothgattcharacteristic)
{
String s = bluetoothgattcharacteristic.getStringValue(0).trim();
kawalog((new StringBuilder("onCharacteristicChanged:")).append(s).toString());
sb.append(s);
if (!s.endsWith("@"))
{
observer.onBleReceiveText(sb.toString(), 1);
return;
} else
{
observer.onBleReceiveText(sb.toString(), 0);
sb = new StringBuilder();
return;
}
}
public void onCharacteristicRead(BluetoothGatt bluetoothgatt, BluetoothGattCharacteristic bluetoothgattcharacteristic, int i)
{
kawalog((new StringBuilder("onCharacteristicRead:")).append(i).toString());
}
public void onConnectionStateChange(BluetoothGatt bluetoothgatt, int i, int j)
{
kawalog((new StringBuilder("onConnectionStateChangea:")).append(i).toString());
kawalog((new StringBuilder("newState:")).append(j).toString());
if (j == 2)
{
kawalog("connected");
bGatt.discoverServices();
} else
if (j == 0)
{
kawalog("disconnected");
if (boardGatt == bluetoothgatt)
{
Boolean boolean1 = isConnected;
disConnect();
if (boolean1.booleanValue())
{
(new Thread(new Runnable() {
final _cls1 this$1;
public void run()
{
try
{
Thread.sleep(500L);
startScan();
return;
}
catch (InterruptedException interruptedexception)
{
interruptedexception.printStackTrace();
}
}
{
this$1 = _cls1.this;
super();
}
})).start();
return;
}
}
}
}
public void onServicesDiscovered(BluetoothGatt bluetoothgatt, int i)
{
kawalog((new StringBuilder("onServicesDiscovered:")).append(i).toString());
Iterator iterator = bluetoothgatt.getServices().iterator();
BluetoothGattCharacteristic bluetoothgattcharacteristic;
label0:
do
{
BluetoothGattService bluetoothgattservice;
do
{
if (!iterator.hasNext())
{
kawalog("\u9055\u3046\u30C7\u30D0\u30A4\u30B9");
differDeviceSet.add(bGatt.getDevice());
nextDevice();
return;
}
bluetoothgattservice = (BluetoothGattService)iterator.next();
kawalog((new StringBuilder("service.getUuid().toString():")).append(bluetoothgattservice.getUuid().toString()).toString());
} while (bluetoothgattservice == null || bluetoothgattservice.getUuid() == null || !bluetoothgattservice.getUuid().toString().equals("442f1570-8a00-9a28-cbe1-e1d4212d53eb"));
Iterator iterator1 = bluetoothgattservice.getCharacteristics().iterator();
do
{
if (!iterator1.hasNext())
{
continue label0;
}
bluetoothgattcharacteristic = (BluetoothGattCharacteristic)iterator1.next();
} while (!bluetoothgattcharacteristic.getUuid().toString().equalsIgnoreCase("442f1571-8a00-9a28-cbe1-e1d4212d53eb"));
break;
} while (true);
BluetoothGattDescriptor bluetoothgattdescriptor;
if (bluetoothgatt.setCharacteristicNotification(bluetoothgattcharacteristic, true))
{
kawalog("okNotification");
boardGatt = bluetoothgatt;
bAdapter.stopLeScan(scanCallback);
connected();
} else
{
kawalog("status: failNotification");
}
bluetoothgattdescriptor = bluetoothgattcharacteristic.getDescriptor(UUID.fromString("00002902-0000-1000-8000-00805f9b34fb"));
bluetoothgattdescriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
bluetoothgatt.writeDescriptor(bluetoothgattdescriptor);
}
{
this$0 = Ble.this;
super();
sb = new StringBuilder();
}
};
private Boolean isActive;
private Boolean isConnected;
private BleObserver observer;
private int requestType;
private final android.bluetooth.BluetoothAdapter.LeScanCallback scanCallback = new android.bluetooth.BluetoothAdapter.LeScanCallback() {
final Ble this$0;
public void onLeScan(BluetoothDevice bluetoothdevice, int i, byte abyte0[])
{
kawalog("onLeScan");
if (bluetoothdevice.getName() == null)
{
kawalog("nullDevice");
return;
}
kawalog((new StringBuilder("onLeScan:")).append(bluetoothdevice.getName()).toString());
kawalog((new StringBuilder("scanRecord:")).append(abyte0.length).toString());
kawalog("connectGatt");
if (!differDeviceSet.contains(bluetoothdevice))
{
deviceSet.add(bluetoothdevice);
}
if (bGatt != null)
{
kawalog("\u691C\u7D22\u4E2D");
return;
} else
{
nextDevice();
return;
}
}
{
this$0 = Ble.this;
super();
}
};
private Timer timer;
public Ble(Context context1, BleObserver bleobserver)
{
isConnected = Boolean.valueOf(false);
isActive = Boolean.valueOf(false);
deviceSet = new HashSet();
differDeviceSet = new HashSet();
context = context1;
observer = bleobserver;
bManager = (BluetoothManager)context1.getSystemService("bluetooth");
bAdapter = bManager.getAdapter();
}
private void closeGatt()
{
if (bGatt != null)
{
kawalog("bGattClose");
bGatt.disconnect();
bGatt.close();
bGatt = null;
}
}
private void connected()
{
stopTimer();
isConnected = Boolean.valueOf(true);
observer.onBleConnected();
}
private void kawalog(String s)
{
Log.d("kawa", (new StringBuilder("kawalog:")).append(s).toString());
}
private void nextDevice()
{
if (deviceSet.isEmpty())
{
return;
} else
{
closeGatt();
final BluetoothDevice device = (BluetoothDevice)deviceSet.iterator().next();
kawalog((new StringBuilder("nextDevice:")).append(device.getName()).toString());
deviceSet.remove(device);
(new Handler(context.getMainLooper())).post(new Runnable() {
final Ble this$0;
private final BluetoothDevice val$device;
public void run()
{
bGatt = device.connectGatt(context, false, gattCallback);
}
{
this$0 = Ble.this;
device = bluetoothdevice;
super();
}
});
return;
}
}
private void onTime()
{
Log.d("kawalog", "onTime");
isConnected = Boolean.valueOf(false);
observer.onBleTimeout();
closeGatt();
stopScan();
}
private void startScan()
{
isActive = Boolean.valueOf(true);
if (isConnected.booleanValue())
{
kawalog("\u63A5\u7D9A\u6E08\u307F");
observer.onBleConnected();
stopTimer();
return;
}
startTimer();
closeGatt();
deviceSet = new HashSet();
differDeviceSet = new HashSet();
kawalog((new StringBuilder("isEnable:")).append(bAdapter.isEnabled()).toString());
if (!bAdapter.isEnabled())
{
bAdapter.enable();
}
bAdapter.startLeScan(scanCallback);
}
private void startTimer()
{
stopTimer();
Log.d("kawalog", "startTimer");
timer = new Timer();
timer.schedule(new TimerTask() {
final Ble this$0;
public void run()
{
onTime();
}
{
this$0 = Ble.this;
super();
}
}, 4000L);
}
private void stopScan()
{
kawalog("stopScan");
stopTimer();
isActive = Boolean.valueOf(false);
if (bAdapter == null)
{
return;
} else
{
bAdapter.cancelDiscovery();
bAdapter.stopLeScan(scanCallback);
return;
}
}
private void stopTimer()
{
kawalog("stopTimer");
if (timer != null)
{
timer.cancel();
timer = null;
}
}
public void disConnect()
{
kawalog("-------disconnect-------");
stopTimer();
stopScan();
if (!isConnected.booleanValue())
{
return;
} else
{
isConnected = Boolean.valueOf(false);
observer.onBleDisconnected();
closeGatt();
return;
}
}
public void onPause()
{
bAdapter.stopLeScan(scanCallback);
}
public void onResume()
{
kawalog("---------------onResume!!!!!!");
if (isActive.booleanValue()) goto _L2; else goto _L1
_L1:
kawalog("not active");
if (!isConnected.booleanValue()) goto _L2; else goto _L3
_L3:
observer.onBleConnected();
stopTimer();
_L5:
return;
_L2:
if (!isConnected.booleanValue())
{
kawalog("startScan");
startScan();
return;
}
if (true) goto _L5; else goto _L4
_L4:
}
public void tryConnect()
{
requestType = 1;
stopScan();
startScan();
}
} |
Concernant plus particulièrement les lignes 46 à 48, je pense qu'il s'agit de code pour se connecter à un périphérique BLE (Bluetooth Low Energy) et que dans ces lignes on trouve en autre l'ID (adresse) du périphérique en question ?
Est-ce bien cela ?
Merci d'avance pour votre aide.
